/*
* $HeadURL: https://svn.apache.org/repos/asf/jakarta/httpcomponents/httpcore/tags/4.0-alpha2/src/java/org/apache/http/protocol/HttpService.java $
* $Revision: 408098 $
* $Date: 2006-05-20 23:29:41 +0200 (Sat, 20 May 2006) $
*
* ====================================================================
*
* Copyright 1999-2006 The Apache Software Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
*/
package org.apache.http.protocol;
import java.io.IOException;
import org.apache.http.ConnectionClosedException;
import org.apache.http.ConnectionReuseStrategy;
import org.apache.http.HttpEntity;
import org.apache.http.HttpEntityEnclosingRequest;
import org.apache.http.HttpException;
import org.apache.http.HttpRequest;
import org.apache.http.HttpResponse;
import org.apache.http.HttpServerConnection;
import org.apache.http.HttpStatus;
import org.apache.http.HttpVersion;
import org.apache.http.MethodNotSupportedException;
import org.apache.http.ProtocolException;
import org.apache.http.StatusLine;
import org.apache.http.UnsupportedHttpVersionException;
import org.apache.http.impl.DefaultConnectionReuseStrategy;
import org.apache.http.message.BasicHttpResponse;
import org.apache.http.params.HttpParams;
/**
* Minimalistic server-side implementation of an HTTP processor.
*
* @author <a href="mailto:oleg at ural.ru">Oleg Kalnichevski</a>
*
* @version $Revision: 408098 $
*/
public class HttpService extends AbstractHttpProcessor {
private final HttpServerConnection conn;
private final ConnectionReuseStrategy connStrategy;
private final HttpContext context;
private volatile boolean destroyed = false;
private HttpParams params = null;
public HttpService(final HttpServerConnection conn) {
super();
if (conn == null) {
throw new IllegalArgumentException("HTTP server connection may not be null");
}
this.conn = conn;
this.connStrategy = new DefaultConnectionReuseStrategy();
this.context = new HttpExecutionContext(null);
}
public HttpParams getParams() {
return this.params;
}
public void setParams(final HttpParams params) {
this.params = params;
}
public boolean isActive() {
return this.conn.isOpen();
}
protected void closeConnection() {
try {
this.conn.close();
} catch (IOException ex) {
logIOException(ex);
}
}
public void handleRequest() {
this.context.setAttribute(HttpExecutionContext.HTTP_CONNECTION, this.conn);
BasicHttpResponse response = new BasicHttpResponse();
response.getParams().setDefaults(this.params);
try {
HttpRequest request = this.conn.receiveRequestHeader(this.params);
if (request instanceof HttpEntityEnclosingRequest) {
if (((HttpEntityEnclosingRequest) request).expectContinue()) {
logMessage("Expected 100 (Continue)");
BasicHttpResponse ack = new BasicHttpResponse();
ack.getParams().setDefaults(this.params);
ack.setStatusCode(HttpStatus.SC_CONTINUE);
this.conn.sendResponseHeader(ack);
this.conn.flush();
}
this.conn.receiveRequestEntity((HttpEntityEnclosingRequest) request);
}
preprocessRequest(request, this.context);
logMessage("Request received");
this.context.setAttribute(HttpExecutionContext.HTTP_REQUEST, request);
this.context.setAttribute(HttpExecutionContext.HTTP_RESPONSE, response);
doService(request, response);
if (request instanceof HttpEntityEnclosingRequest) {
// Make sure the request content is fully consumed
HttpEntity entity = ((HttpEntityEnclosingRequest)request).getEntity();
if (entity != null) {
entity.consumeContent();
}
}
} catch (ConnectionClosedException ex) {
logMessage("Client closed connection");
closeConnection();
return;
} catch (HttpException ex) {
handleException(ex, response);
} catch (IOException ex) {
logIOException(ex);
closeConnection();
return;
}
try {
postprocessResponse(response, this.context);
this.conn.sendResponseHeader(response);
this.conn.sendResponseEntity(response);
this.conn.flush();
logMessage("Response sent");
} catch (HttpException ex) {
logProtocolException(ex);
closeConnection();
return;
} catch (IOException ex) {
logIOException(ex);
closeConnection();
return;
}
if (!this.connStrategy.keepAlive(response)) {
closeConnection();
} else {
logMessage("Connection kept alive");
}
}
protected void handleException(final HttpException ex, final HttpResponse response) {
if (ex instanceof MethodNotSupportedException) {
response.setStatusCode(HttpStatus.SC_NOT_IMPLEMENTED);
} else if (ex instanceof UnsupportedHttpVersionException) {
response.setStatusCode(HttpStatus.SC_HTTP_VERSION_NOT_SUPPORTED);
} else if (ex instanceof ProtocolException) {
response.setStatusCode(HttpStatus.SC_BAD_REQUEST);
} else {
response.setStatusCode(HttpStatus.SC_INTERNAL_SERVER_ERROR);
}
}
protected void doService(final HttpRequest request, final HttpResponse response)
throws HttpException, IOException {
HttpVersion ver = request.getRequestLine().getHttpVersion();
if (ver.lessEquals(HttpVersion.HTTP_1_1)) {
response.setStatusCode(HttpStatus.SC_NOT_IMPLEMENTED);
} else {
response.setStatusLine(new StatusLine(HttpVersion.HTTP_1_1, HttpStatus.SC_NOT_IMPLEMENTED));
}
}
protected void logMessage(final String s) {
}
protected void logIOException(final IOException ex) {
}
protected void logProtocolException(final HttpException ex) {
}
public void destroy() {
this.destroyed = true;
try {
this.conn.shutdown();
} catch (IOException ex) {
logIOException(ex);
}
}
public boolean isDestroyed() {
return this.destroyed;
}
}